Cross winding frame for winding strand materials



Sept. 21, 1937. w. sn-:GENTHALER 2,093,820

CROSSv WINDING FRAME FOR WINDING STRAND MATERIALS v Filed Aug. 8, 1954 Patented Sept. 2l, 1937 N tanzt PATENT OFFICE CROSS WINDING FRAME FOR WINDING STRAND MATERIALS Walter SiegenthalenErlenbach, Switzerland, as-

signor to the iirm Scharer-Nussbaumer & C0., Erlenbach, Switzerland Application August 8,

1934, Serial No. 739,031

In Switzerland and Great Britain August 21,

5 Claims.

This invention relates to cross winding frames for winding strand materials such as yarns or threads, having reciprocating thread' guides, wherein the number of revolutions of the wind- 5 ing spindle decreases as the diameter of the coil of material at the point of application of thel yarn or thread increases, while the ratio of gearing between the winding spindle and the drive of the thread guide remains constant, whereby it is possible to obtain a coil of a regular texture throughout the thickness of the coil. 1

In known cross winding machines of this gen'- eral type, the speed of turning of the winding has 'been governed by the'size of the Winding by varying the drive ratio of the spindle in accordance with the pivotal position of a spindle carrye ing arm by causing the spindle to move away from a iixed roller. Such a machine is disclosed in French Patent No. 666,033, dated September 26, 1929. However, the machine according to said patent has the limitation that the speed of turning of the spindle is at all times governed by the largest diameter of vthe winding, rather than by the diameter at the point on=the winding on which the thread is being laid by the thread guide. Such a `machine is satisfactory only for the winding of cylindrical bobbins.

According to this invention, a belti which is slung round a driving disc carried by a drive shaft and is passed over a tensioning roller is shifted on the driving disc in the transverse direction thereto by action of the thread guide, for the purpose of varying the. angular velocity of the Winding spindle as imparted to an adjacent friction disc by friction action ofthe belt in dependence upon the diameter of the winding at the point thereof where the thread is being laid by the thread guide.

Tests have shown that the driving belt runf ning at the same speed as the driving pulley opposes but very little resistance to being shifted on the driving pulley, so that by shifting it the coil being wound is not aiected in the least. At the same time this arrangement permits the use 45 of a driving pulley which vis i'lxed to the driving shaft and which is, therefore, not subjected to wear at the portions with which it bears on the shaft; By this means, the mounting of a plurality of individual machines on a common bed is considerably facilitated and a precise 'operation of the machine is ensured. Moreover, the invention can be embodied in cross winding frames of usual constructions by merely adding supplementary means tothe same.

In the drawing `a constructional form of the invention is illustrated by way of example, only the parts being shown which are necessary to a proper understanding of the invention. In the drawing;

Fig. 1 shows an elevation of the machine, ac- 5.:

cording to the invention, partly in section.

Fig. 2 shows a plan view of Fig. 1,

Fig. 3 is a front View of the machine, and

Fig. 4 shows a section on the line IV-IV in Fig. 2.

The driving shaft I is common toa plurality of winding frames' mounted'on'one andthe same machine bed which is indicated in Fig. 1 by its top contour line A, but otherwise 'not shown. This shaft l carries a driving pulley 3 for the 15 friction disc 2 of each windingframe. For transmitting the drivinglmotion of the pulley 3 to the disc 2 disposed at right angles thereto, a belt 4 is provided which is slung round the circumference of the pulley 3 and cooperates with the plane end face of the disc 2 Vby operative frictional engagement. i

For the purpose of varying the number of revolutions transmitted from the friction disc 2 to the winding spindle 5, the belt 4 which is free of driving tension is shifted in the axial direction of the pulley 3 on the appropriately widened circumferential surface of saidpulley, whereby the radial distance between the belt 4 and the axis ofthe frictiondisc 2 and winding spindle 5 30 is correspondingly changed and thus also the number of revolutions transmitted to the latter is altered.

To this end, a tensioning roller 6 is provided, which receives the belt in a. circumferential groove, for weighting the belt and thus maintaining it tensioned. This tensioning roller v( is mounted at the end of a lever 'I which is bent in various waysand which is mountedon a pin 8 between two ears 9 which in turn are secured on a slide I0. The slide I0 is mounted on a rod I2 by means of a slot Il and slidingly engages a stud I4 by means of a slot I3 (Fig. 3).

The pin I4 is provided on an arm I5 which 45 is fastened on the corresponding end of the rod I2 which is mounted in lower bearings I2" on the drive box I6. At the `other end, the rod I2 is bent laterally to form an arm I2 on which a connecting piece Il is displaceably arranged and adapted to be held in adjusted position by clamping screw I'I, which also servesrfor pivotally connecting a link I8 to connecting piece Il. Link I8, in turn, is pivotally connected to a cont necting piece I9 which is displaceably arranged on an arm 20 and adapted to be held on this arm in adjusted position by clamping screw I9' similarly as the connecting piece I 'I. The arm 20 is firmly connected to a flap 2| and pivotally arranged together with the latter on a shaft 22. The fiap 2| serves for guiding a thread guide 23 during the reciprocating movement of the latter in the longitudinal direction of the winding spindle in a known manner.

The thread guide 23 is turned outwardly in the direction of arrow a in Fig. 4about the shaft 22 together with the flap 2| during the winding operation in accordance with the increase in diameter of the coil being Wound with the thread B,

which is indicated in chainv dotted lines in thisA Figure 4. At the same time the arm 20 is correspondingly rocked in the directions of the arrows b in the Figs. 3 and 4, and the arm I2 is also rocked in the direction of arrow c in Fig. 3

by means of the link I8, so that the rod |2 is.

turned about the axis of the same. Consequently, the arm I5 is rocked in the direction of arrow d in Fig. 3 accordingly and the slide Ill-v isk shifted, by means of the stud I4, in the directiony indicated by the arrow e in this iigure.

During this movement the belt 4 is shifted on the circumference of the pulley 3 in the axial direction of the latter by theV tensioning roller 6 moving together with the slide I0, so that the belt` is gradually approached on the exterior circumference of the friction disc 2 and thus the number of revolutions of this disc is lessened. On the finished coil having been doifed, the winding frame is restored to the previous condition of operation by rocking the thread guide 23 into initial position..

Owing to the connecting pieces I1 and I9 being adjustable longitudinally of the respective arms I2" and 20 and accordingly the points at which the link 8 acts on these arms, this arrangement permits of regulating the range of rocking movement of the thread guide 23 and thus the extent of displacement of the belt 4 on the pulley 3.

A longitudinally displaceable rail 24 serves for setting the'frictiorr disc 2 into operative position in engagement with the pulley 3. To this end, the rail 24 is displaced so as tofswing a lever 26 about a pivot 2`|in the directontowards the driving pulley 3. The lever 26A is connected with a dish-shaped disc 30 loosely mounted on the spindle 5 and serving as an abutment for a coil spring 3| surrounding this spindle and bearing with its other end against a central hub member 32.' Between the disc 3,0. and the hub mem-ber 32 an intervening sleeve 33is provided which projects radially so as tooverlie the circumferential rim of the disc 3Ilin a manner to bedisplaceable relatively thereto. During the swinging movement of the lever 26 referred to above, at first the disc 30 is carried along for conjoint movement, while the spring 3| is compressed, and thereupon the friction disc 2 is pressed against the driving belt 4 for'driving engagement therewith. A stop member 34 operable by means of a handle 35 and cooperating with a projection 36 on the outer bearing of the rail 24' serves for arresting this rail in its position-corresponding tothe relative disposition of the disc 2 and the pulley 3 providing operative frictional engagement between these two parts. Y

I do not limit myself to thel particular size, shape, number or arrangement of parts as shown and described, all of which may be varied without going beyond the scope of my invention as shown, described and claimed.

What I claim is:

1. An automatically regulated speed varying drive for cross winding machines having driving shafts and driven winding spindles angularly disposed relative to the drive shafts, and pivotally mounted oscillating thread guides in contact with the winding, said drive comprising a drive disc on the drive shaft, a driven disc on the winding spindle, a tensioning roller, an endless belt passing around the` driving disc and between the driving disc and a face of the driven disc and frictionally contacting said face of the driven disc, said belt also passing around said tensioning roller; the portion of said belt passing around said tensioning roller being free of machine driving tension, means connecting the thread guide with the tensioning roller for moving said roller and thereby the endless belt longitudinally of the drive disc and axially of the driven disc in accordance with the pivotal position of the thread guide, to automatically vary the angular velocity of the winding spindle in dependence upon the size of the winding at the point being wound.

2. An automatically regulated speed varying drive for cross winding machines having driving shaftsf and driven winding spindles angularly disposed relative to the drive shafts, and pivotally mounted oscillating thread guides in contact with the winding, said drive comprising a drive disc on the drive shaft, a driven disc on the Winding spindle, a tensioning roller, an endless belt passing around the driving disc and between the driving disc and a face of the driven disc and frictionally contacting said face of the driven disc, saidi belt also passing around said tensioning roller, the portion of said belt passing around said tensioning roller being free of machine driving tension, means connecting the thread guide with the tensioning roller for moving said roller and thereby the endless belt longitudinally of the drive` disc and axially of the driven disc in accordance with the pivotal position of the thread guide, to automatically vary the angular velocity of the winding spindle in dependence upon the size ofthe winding at the point being wound, said connectingmeans including a slide.

3. An automatically regulated speed varying drive for cross winding machines having driving shafts and driven winding spindles angularly disposed relative to the drive shafts, and pivotally mounted oscillating thread guides in contact with the winding, said drive comprising a drive disc on the drive; shaft, a driven disc on the winding spindle, a tensioning roller, an endless belt passing around the driving disc and between the driving disc and a face of the driven disc and frictionally contacting said face of the driven disc, said belt also passing around said tensioning roller, the portion of said belt passing around said tensioning roller being free of machine driving tension, means connecting the thread guide with the tensioning roller for moving said roller and thereby the endless belt longitudinally of the drive disc and axially of the driven disc in accordance with the pivotal position of the thread guide, t0 automatically vary the angular velocity of the winding spindle in dependence upon the size of the winding at the point being wound, said connecting means including a slide and control linkage, saidlinkage having adjustable means for regulating the leverage ofV said connecting means for varying the extent of movement of said belt longitudinally of the driving disc.

4. An automatically regulated speed varying drive for crossgwinding machines having driving shafts and driven winding spindles angularly disposed relative to the drive shafts, and pivotally mounted oscillating thread guides in Contact with the Winding, said drive comprising a drive disc on the drive shaft, a driven disc on the winding spindle, a tensioning roller, an endless belt passing around the driving disc and between the driving disc and a face of the driven disc and frictionally contacting said face of the driven disc, said belt also passing around said tensioning roller, the portion of said belt passing around said tensioning roller being free of machine driving tension, means connecting the thread guide with the tensioning roller for moving said roller and thereby the endless belt longitudinally of the drive disc and axially of the driven disc in accordance with the pivotal position of the thread guide, to automatically vary the angular velocity of the winding spindle in dependence upon the size of the Winding at the point being Wound, said connecting means including a slide and control linkage, said linkage having adjustable means for regulating the leverage of said connecting means for varying the extent of movement of said belt longitudinally of the driving disc, and a substantially horizontal pivot joint between said slide and said tensioning roller whereby the weight of said roller tensions said belt.

5. An automatically regulated speed Varying drive for cross Winding machines having driving shafts and driven winding spindles angularly disposed relative to the drive shafts, and pivotally mounted oscillating thread guides in contact with the winding, said drive comprising a drive disc on the drive shaft, a driven disc on the Winding spindle, a tensioning roller, an endless belt passing around the driving disc and between the driving disc and a face of the driven disc and frictionally contacting said face of the driven disc, said belt also passing around said tensioning roller, the portion of said belt passing around said tensioning roller being free of machine driving tension, means connecting the thread guide with the tensioning roller for moving said roller and thereby the endless belt longitudinally of the drive disc and axially of the driven disc in accordance with the pivotal position of the thread guide, to automatically vary the angular velocity of the Winding spindle in dependence upon the size of the Winding at the point being wound, said connecting means including a slide, said tensioning roller being provided with a circumferential groove in which said belt runs and is guided, said roller being pivotally mounted whereby its Weight tensions said belt, longitudinal movement of said roller serving to move said belt through lateral pressure on the belt exerted by the Wall of the roller groove.

WALTER lSIEGENT'l-IALER. 

